<template>
  <div class="todo-header">
    <input type="text" placeholder="请输入你的任务名称，按回车键确认" v-model.trim="text" @keyup.enter="handleKeyUp"/>
  </div>
</template>

<script type="text/ecmascript-6">
  import utils from "../utils"
  
  var id = utils.getIdkey(); // 1
  export default {
    name: "todo-header",
    data() {
      return {
        text: ""
      }
    },
    props: {
      addTodo: Function
    },
    methods: {
      handleKeyUp() {
        //判断输入的文本是不是空白字符 空格
        if (this.text === "") {
          alert("请输入一些数据");
          return;
        }
        //构建一个todo对象
        var todoId = ++id;
        utils.setIdkey(todoId);
        const todo = {
          id: todoId,
          text: this.text,
          completed: false
        }
        
        
        // 往 app.vue组件的todos中加一个todo对象
        //this.$emit("addToDo",todo)
        this.addTodo(todo)
        
        //情况输入框
        this.text = "";
      }
    }
  }
</script>

<style scoped>
  .todo-header input {
    width: 560px;
    height: 28px;
    font-size: 14px;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 4px 7px;
  }
  
  .todo-header input:focus {
    outline: none;
    border-color: rgba(82, 168, 236, 0.8);
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
  }
</style>
